Answer:
(B). melatonin.
Step-by-step explanation:
Melatonin is a hormone, responsible for regulation o sleep-wake cycle. Pineal gland synthesizes and releases melatonin. Melatonin hormone is not related with anger or stress.
On the other hand, epinephrine, cortisol, and testosterone are hormones related to stress and anxiety so these hormones will rise in Bill.
Thus, the correct answer is option (B).